METREL MI 2792 PowerQ4 Plus, Instruction Manual

Page: 130 / 138

MI 2792 PowerQ4 Plus
Technical specifications
130
6.3 Recorders
6.3.1 General recorder
Sampling 5 readings per second, continuous sampling per channel. All
channels are sampled simultaneously. Sampling frequency is
continuously synchronized with main frequency.
Recording time From 30 min with 1 second display resolution up to 99 days with 1
hour display resolution.
Recording type Linear – start and stop in accordance to user settings.
Circular – when recorded data exceeds free memory, oldest data
in the current recording are overwritten with the new one.
Recording
quantities 1 ÷ 524 parameters can be recorded. For each parameter
minimum, maximal average and active average value is stored.
For default recorder settings (179 signals selected for recording)
Resolution
1 s 3 s 5 s 10 s 1 min 2 min
Duration 1 hr 4 hrs 7 hrs 15 hrs 3 days 7 days
Resolution 5 min 10 min 15 min 30 min 60 min
Duration 18 days 37 days 56 days 99 days 99 days
Events Up to 1000 voltage events signatures can be stored into record
Alarms Up to 1000 alarms signatures can be stored into record
Trigger Start time or manual
6.3.2 Waveform recorder
Sampling 102.4 samples per cycle period, continuous sampling per
channel. All channels are sampled simultaneously. Sampling
frequency is continuously synchronized with mains frequency.
Recording time From 10 cycle period to 3770 cycle periods
Recording type
Single – waveform recording ends after first trigger.
Continuous – consecutive waveform recording until user stops
the measurement or instrument runs out of storage memory.
Recording
quantities Waveform samples of: U
1
, U
2
, U
3
, U
N
, (U
12
, U
23
, U
31
), I
1
, I
2
, I
3
, I
N
For 50 Hz mains frequency
No. of signals
1 2 4 8
Duration 75 sec 38 sec 19 sec 9 sec
Trigger: Voltage event, alarms defined in alarm table or manual
6.3.3 Inrush/fast recorder
Sampling 1 reading per half-cycle ÷ 1 reading per 10-cycles
(for 50 Hz mains frequency: 5 to 100 readings per second)
All channels are sampled simultaneously. Sampling frequency is
continuously synchronized with mains frequency.
Recording time From 1 s ÷ 3 min
Recording type
Single – inrush recording ends after first trigger
Continuous – consecutive inrush recording until user stops the
measurement or instrument runs out of storage memory.
Recording U
1Rms(1/2)
, U
2Rms(1/2)
, U
3Rms(1/2)
, U
NRms(1/2)
, (U
12Rms(1/2)
, U
23Rms(1/2)
,